crackmba2012 wrote:
If y is an integer, is y^3 divisible by 8?
(1) y is even.
(2) y^3 - y is even.
[Reveal] Spoiler:
Shouldn't the answer be E because y could be 0 which is an even integer?
St 1
Is clearly suff - for example 6^ 3
3 x2 x 3 x2 x 3x2 / 2 * 2 *2
St 2
(5)^3-5= 120 ... but wait...we're only evaluating for y^3 so insuff
A
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